Parts
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JLT series 3 CAI & SCT X3 tuner
DIY ported stock throttle body (used)
DIY charge motion delete plates (used)
Steeda underdrive pulleys
JBA replica shorty headers
Pypes high flow 300 cpi cats (used)
Ford Performance X-pipe
Brenspeed 91 octane (95 RON) custom tune
Driver & Passenger side eBay air/oil separators
Drivetrain
McLeod RXT twin disc clutch assembly
McLeod billet steel flywheel
McLeod braided SS clutch hydraulic line
Barton short throw shifter
DSS 3.5" aluminum driveshaft
Chassis/Suspension
BMR rear lower control arms & relocation brackets
Prothane rear sway bar & end link bushings
Energy Suspension rear track bar bushings
Prothane rear differential carrier bushing
Energy Suspension front control arm bushings
Energy Suspension front sway bar bushings
GT500 front strut mounts
Ford Performance A-arm brace
Brakes
Powerslot cryotreated front rotors
Hawk Performance ceramic front brake pads
Interior
Premium 6-gauge instrument cluster (used)
Info/Setup/Reset switch assembly
Premium leather steering wheel (used)
SilverHorse Racing trunk release switch
Lighting
CDC sequential taillight kit Sequential Hazards, Sequential Left Turn, Sequential Right Turn
Aerodynamics
2010 Mustang engine splash shield
DIY front undertray extensions
DIY K-member undertray
DIY front wheel air deflectors
DIY rear bumper undertray
Estimated Cd 0.345
Wheels & Tires
GT/CS 18" chrome Bullitt wheels
255/45R18 tires
Dyno
Maximum HP: 321rwhp (365bhp or 79.3bhp/liter) @ 6100rpm
Maximum TQ: 333rwtq (375lbft or 81.4lbft/liter) @ 4400rpm
The result was a solid 50rwhp & 44rwtq (54bhp & 47lbft) gain over stock from simple external bolt-on performance parts plus a custom tune costing a mere $1300.
Maximum HP/TQ outputs match those of a stock 360bhp & 380lbft rated Gen 1 F-150 Coyote 5.0L V8 engine but were achieved from 350cc less cylinder displacement and at a fraction of the cost of a Coyote swap. Not bad for a "little" 4.6 that's still equipped with the original cylinder heads/camshafts/intake manifold! Even the high-flow cats remain in the stock location in order to comply with tough emissions regulations, and the engine is tuned to run on the cheapest grade of gasoline available in Europe (95 RON octane).
Although maximum HP/TQ outputs of my 4.6L 3V engine are still 47bhp & 15lbft shy of a stock Gen 1 Mustang Coyote 5.0L V8, the torque output is actually higher below 3000rpm where the engine operates 99% of the time during street use (including highway speeds up to ~100mph in top gear). It's also within 15lbft of the Mustang Coyote in the 3000-5000rpm midrange. Given that my 2006 GT is 150lb lighter than a stock 2011 GT, the maximum torque:weight ratio is identical and a stock 2011 GT only enjoys a performance advantage above 5000rpm.
Thanks to a fully functional variable cam timing system, at least 80% of maximum torque is available over a wide 1300-6300rpm range. The HP curve is also within 6rwhp of its peak from 5200-6400rpm. Consequently performance is strong all the way from off-idle right up to the 6600rpm rev limiter. Indeed it's possible to make rapid progress on many public roads using only 3rd gear (effective speed range 17-110mph)!
Underhood Appearance
Redline Tuning hood struts
CPC radiator cover extensions (used)
BBK intake manifold plenum cover
VMS Racing chrome strut tower caps & nuts
DIY 8" shorty antenna
These CPC radiator cover extensions clean up the look at the front of the engine bay. Makes you wonder why Ford didn't fit them from the factory in the first place.
Note that I also installed a pair of Redline Tuning hood struts. Another item that Ford could have fitted in the first place!
Front Fender Decals
These aftermarket decals leave unsuspecting bystanders in no doubt about the muscle lurking under the hood! A torquey, naturally-aspirated V8 engine with a razor sharp throttle response and a wide powerband makes the driving experience very enjoyable in a car weighing less than 3500lb. It also permits a tall 5th gear (32.4mph/1000rpm) for impressive highway fuel economy (28mpg US at 70mph) whilst maintaining strong acceleration (50-70mph in 7.2secs) for quick overtaking manoeuvres.